"To the chief of the operations department of the 25th Corps HQ
Anti-tank rifles are ineffective against new German SPGs and heavy tanks. For example, during the battles of December 14th-15th, 1943, AT rifle units were engaged to fight counterattacking Ferdinand SPGs. The Ferdinand's armour could not be damaged with AT rifle fire, and only several direct hits to the tracks forced the SPGs to depart from the trenches and maneuver with the goal of not showing their flank, even though no instances of serious damage to the tracks by AT rifle fire was observed.
Until the battles of December 14th-15th, AT rifle crews were not used in battle for their intended purpose. AT rifle fire was used against dug in enemies, to destroy his machineguns, and for suppression of direct fire guns.
Until new AT measures arrive that are capable of dealing with new SPGs and heavy tanks, keep AT platoons and companies at the regimental level. Due to the relatively low weight of the AT rifles, they can quickly be moved to threatened sections of the front to be used against enemy light and medium tanks, dugouts, and be used in AT defenses.
Operations Department Chief, Major Alekseev."