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In page Panzerjäger I:

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By 27 July 1941, Anti-tank Battalion 529 had lost four Panzerjäger I's. On 23 November 1941 it reported that it still had sixteen vehicles, although two were not operational.[4] Most do not appear to have survived the Winter of 1941–42 as Anti-tank Battalion 521 reported only five on hand on 5 May 1942. Anti-tank Battalion 529 had only two on strength when it was disbanded on 30 June 1942. Anti-tank Battalion 616 seems to have been an exception as it reported all three companies had Panzerjäger I's through at least the fall of 1942.[2]