The Polish Army Medal for War 1939-1945 (Polish: Medal Wojska za Wojne 1939-45) was created in 1945 by the Polish government in Exile in London) to acknowledge active war service of the Polish ground forces for service during World War II. The eligibility criteria were: six months of operational service during World War II, or 12 months in a non-operational role. The medal could be conferred up to four times, although for a subsequent award the period of service was doubled.