"December 13th, 1939
To the Assistant of the Chief of the General Staff of the RKKA, Corps Commander comrade Zaharov
RE: your #57129s/s
It is not possible to perform battlefield trials of the KV, SMK, T-100, A-20, A-32, T-40, A5, A7M tanks or the BA-11 armoured car in 1939, as the experimental KV, SMK, and T-100 tanks are currently undergoing proving grounds trials.
Experimental prototypes of the A-20, A-32, T-40, A5, A7M tanks, and the BA-11 armoured car passed proving grounds trials, and the factories are now making changes to blueprints based on the results of the trials, in order to produce pilot batches.
Only tanks and armoured cars produced in 1940 will be sent to battlefield trials.
Modernized T-28 tanks will not undergo battlefield trials, and will be issued to regular Belorussian Military District units.
The modernized T-26 tank has a new suspension, but the turbocharged engine has not yet arrived, and therefore battlefield trials will be postponed until 1940.
The SBT bridgelayer tank will be transferred to battlefield trials in December of 1939.
On the orders of Assistant Chief of the ABTU,
Corps Commander Pavlov Panfilov
On the orders of Military Commissar of the ABTU, Brigade Commissar Kulikov"