From arms caches hidden in 1939, the Home Army obtained 614 heavy machine guns, 1,193 light machine guns, 33,052 rifles, 6,732 pistols, 28 antitank light field guns, 25 antitank rifles, and 43,154 hand grenades. However, due to their inadequate preservation, which had to be improvised in the chaos of the September Campaign, most of the guns were in poor condition. Of those that had been buried in the ground and had been dug up in 1944 during preparations for Operation Tempest, only 30% were usable.