diff --git a/app/api/missions/[missionId]/route.ts b/app/api/missions/[missionId]/route.ts
index 9e2620c..9b274ec 100644
--- a/app/api/missions/[missionId]/route.ts
+++ b/app/api/missions/[missionId]/route.ts
@@ -2,6 +2,29 @@ import { NextResponse } from 'next/server';
 import { getServerSession } from 'next-auth';
 import { authOptions } from "@/app/api/auth/options";
 import { prisma } from '@/lib/prisma';
+import { N8nService } from '@/lib/services/n8n-service';
+import { deleteMissionLogo, deleteMissionAttachment } from '@/lib/mission-uploads';
+import { S3Client, ListObjectsV2Command, DeleteObjectCommand } from '@aws-sdk/client-s3';
+import { logger } from '@/lib/logger';
+
+// S3 Configuration for missions - uses environment variables
+const MISSIONS_S3_CONFIG = {
+  endpoint: (process.env.MINIO_S3_UPLOAD_BUCKET_URL || process.env.S3_ENDPOINT || 'https://dome-api.slm-lab.net').replace(/\/$/, ''),
+  region: process.env.MINIO_AWS_REGION || process.env.S3_REGION || 'us-east-1',
+  accessKey: process.env.MINIO_ACCESS_KEY || process.env.S3_ACCESS_KEY || '',
+  secretKey: process.env.MINIO_SECRET_KEY || process.env.S3_SECRET_KEY || '',
+  bucket: 'missions'
+};
+
+const missionsS3Client = new S3Client({
+  region: MISSIONS_S3_CONFIG.region,
+  endpoint: MISSIONS_S3_CONFIG.endpoint,
+  credentials: {
+    accessKeyId: MISSIONS_S3_CONFIG.accessKey,
+    secretAccessKey: MISSIONS_S3_CONFIG.secretKey
+  },
+  forcePathStyle: true
+});
 
 // GET endpoint to get mission details including creator and missionUsers
 export async function GET(
@@ -66,3 +89,161 @@ export async function GET(
     );
   }
 }
+
+// DELETE endpoint to delete a mission
+export async function DELETE(
+  request: Request,
+  { params }: { params: Promise<{ missionId: string }> }
+) {
+  try {
+    const session = await getServerSession(authOptions);
+    if (!session?.user?.id) {
+      return NextResponse.json({ error: 'Unauthorized' }, { status: 401 });
+    }
+
+    const { missionId } = await params;
+    const userId = session.user.id;
+
+    // Get mission with all related data
+    const mission = await prisma.mission.findUnique({
+      where: { id: missionId },
+      include: {
+        attachments: true,
+        missionUsers: true,
+        calendars: true
+      }
+    });
+
+    if (!mission) {
+      return NextResponse.json({ error: 'Mission not found' }, { status: 404 });
+    }
+
+    // Check if user has permission (only creator can delete)
+    if (mission.creatorId !== userId) {
+      return NextResponse.json({ error: 'Forbidden: Only the mission creator can delete the mission' }, { status: 403 });
+    }
+
+    logger.debug('Starting mission deletion', {
+      missionId,
+      missionName: mission.name,
+      hasLogo: !!mission.logo,
+      attachmentsCount: mission.attachments.length
+    });
+
+    // Step 1: Delete all files from S3/MinIO
+    try {
+      // Delete logo if exists
+      if (mission.logo) {
+        try {
+          await deleteMissionLogo(missionId, mission.logo);
+          logger.debug('Mission logo deleted from S3');
+        } catch (logoError) {
+          logger.warn('Error deleting logo (continuing)', {
+            error: logoError instanceof Error ? logoError.message : String(logoError)
+          });
+        }
+      }
+
+      // Delete all attachments
+      for (const attachment of mission.attachments) {
+        try {
+          await deleteMissionAttachment(attachment.filePath);
+          logger.debug('Attachment deleted from S3', { filePath: attachment.filePath });
+        } catch (attachmentError) {
+          logger.warn('Error deleting attachment (continuing)', {
+            filePath: attachment.filePath,
+            error: attachmentError instanceof Error ? attachmentError.message : String(attachmentError)
+          });
+        }
+      }
+
+      // Delete all files in the mission folder (cleanup any orphaned files)
+      try {
+        const listCommand = new ListObjectsV2Command({
+          Bucket: MISSIONS_S3_CONFIG.bucket,
+          Prefix: `${missionId}/`
+        });
+        const listResponse = await missionsS3Client.send(listCommand);
+        
+        if (listResponse.Contents && listResponse.Contents.length > 0) {
+          const deletePromises = listResponse.Contents.map(obj => {
+            if (obj.Key) {
+              return missionsS3Client.send(new DeleteObjectCommand({
+                Bucket: MISSIONS_S3_CONFIG.bucket,
+                Key: obj.Key
+              }));
+            }
+          });
+          await Promise.all(deletePromises);
+          logger.debug('Cleaned up all files in mission folder', { count: listResponse.Contents.length });
+        }
+      } catch (cleanupError) {
+        logger.warn('Error cleaning up mission folder (continuing)', {
+          error: cleanupError instanceof Error ? cleanupError.message : String(cleanupError)
+        });
+      }
+    } catch (s3Error) {
+      logger.error('Error deleting files from S3 (continuing with database deletion)', {
+        error: s3Error instanceof Error ? s3Error.message : String(s3Error)
+      });
+    }
+
+    // Step 2: Extract repo name for N8N
+    let repoName = '';
+    if (mission.giteaRepositoryUrl) {
+      try {
+        const url = new URL(mission.giteaRepositoryUrl);
+        const pathParts = url.pathname.split('/').filter(Boolean);
+        repoName = pathParts[pathParts.length - 1] || '';
+      } catch (error) {
+        const match = mission.giteaRepositoryUrl.match(/\/([^\/]+)\/?$/);
+        repoName = match ? match[1] : '';
+      }
+    }
+
+    // Step 3: Call N8N deletion webhook (non-blocking)
+    const n8nService = new N8nService();
+    const n8nData = {
+      missionId: mission.id,
+      name: mission.name,
+      repoName: repoName,
+      leantimeProjectId: mission.leantimeProjectId || 0,
+      documentationCollectionId: mission.outlineCollectionId || '',
+      rocketchatChannelId: mission.rocketChatChannelId || '',
+      giteaRepositoryUrl: mission.giteaRepositoryUrl,
+      outlineCollectionId: mission.outlineCollectionId,
+      rocketChatChannelId: mission.rocketChatChannelId,
+      penpotProjectId: mission.penpotProjectId
+    };
+
+    // Call N8N but don't fail if it errors
+    n8nService.triggerMissionDeletion(n8nData).catch(n8nError => {
+      logger.error('N8N deletion webhook failed (mission still deleted from database)', {
+        error: n8nError instanceof Error ? n8nError.message : String(n8nError),
+        missionId
+      });
+    });
+
+    // Step 4: Delete from database (cascade will handle related records)
+    await prisma.mission.delete({
+      where: { id: missionId }
+    });
+
+    logger.debug('Mission deleted successfully', { missionId });
+
+    return NextResponse.json({ 
+      success: true,
+      message: 'Mission deleted successfully'
+    });
+  } catch (error: any) {
+    const { missionId: errorMissionId } = await params;
+    logger.error('Error deleting mission', {
+      error: error instanceof Error ? error.message : String(error),
+      missionId: errorMissionId
+    });
+    return NextResponse.json(
+      { error: 'Failed to delete mission', details: error.message },
+      { status: 500 }
+    );
+  }
+}
diff --git a/app/api/missions/image/[...path]/route.ts b/app/api/missions/image/[...path]/route.ts
index 05ea9da..a14e024 100644
--- a/app/api/missions/image/[...path]/route.ts
+++ b/app/api/missions/image/[...path]/route.ts
@@ -91,15 +91,29 @@ export async function GET(
 
       return new NextResponse(response.Body as any, { headers });
     } catch (error) {
+      // Check if it's a NoSuchKey error (file doesn't exist)
+      const isNoSuchKey = error instanceof NoSuchKey || 
+                         (error instanceof Error && error.name === 'NoSuchKey') ||
+                         (error instanceof Error && error.message.includes('does not exist'));
+      
       logger.error('Error fetching file from Minio', {
         error: error instanceof Error ? error.message : String(error),
         path: filePath,
         minioPath,
-        bucket: 'missions',
-        errorType: error instanceof NoSuchKey ? 'NoSuchKey' : 'Unknown'
+        bucket: MISSIONS_S3_CONFIG.bucket,
+        errorType: isNoSuchKey ? 'NoSuchKey' : 'Unknown',
+        errorName: error instanceof Error ? error.name : typeof error
       });
-      if (error instanceof NoSuchKey) {
-        return new NextResponse('File not found', { status: 404 });
+      
+      if (isNoSuchKey) {
+        // Return 404 with proper headers for image requests
+        return new NextResponse('File not found', { 
+          status: 404,
+          headers: {
+            'Content-Type': 'text/plain',
+            'Cache-Control': 'no-cache'
+          }
+        });
       }
       return new NextResponse('Internal Server Error', { status: 500 });
     }