Key Facts
- Date range
- 15 January – 4 February 1942
- Duration
- ~3 weeks
- Chetnik insurgents in area
- ~20,000
- Follow-up operation
- Operation Ozren (Bosna–Spreča rivers)
- Historiographic framework
- Second Enemy Offensive; Seven Enemy Offensives
Strategic Narrative Overview
The operation ran from 15 January to 4 February 1942, targeting mainly Partisan forces in southeastern NDH territory. The approximately 20,000 Chetnik insurgents in the operational zone offered no resistance and largely withdrew east across the Drina river to avoid engagement. The Partisan main force successfully evaded encirclement, infiltrating through the Italian cordon southward and regrouping around Foča. A follow-up sweep, Operation Ozren, was launched shortly afterward between the Bosna and Spreča rivers.
01 / The Origins
By early 1942, the Independent State of Croatia's eastern Bosnian territory was beset by an armed uprising involving both communist-led Yugoslav Partisans and Serb-nationalist Chetniks. Germany, alarmed by the persistence of insurgency after operations in Serbia in late 1941, organized a large-scale counter-insurgency sweep involving its own forces alongside Croatian Home Guard and Italian troops to suppress the rebellion and restore Axis control over the region.
03 / The Outcome
Axis forces failed to decisively destroy or capture the Partisan main body. The Chetnik withdrawal across the Drina fatally undermined Chetnik–Partisan cooperation in eastern Bosnia, completing their split in the region. The Partisans' escape and consolidation around Foča necessitated a further major Axis offensive, Operation Trio, south of the Operation Southeast Croatia and Ozren areas, prolonging the broader anti-insurgency campaign.
Belligerents & Mobilization Analysis
Side A
3 belligerents
Side B
2 belligerents
Kinetic Engagement Axis
Scroll horizontally to view full axis. Events plotted relatively.