From: Third rock from the Sun.
a high degree of competence or skill; expertise.
"he demonstrated his proficiency in Chinese"
synonyms: skill, skillfulness, expertise, experience, ability, capability, capacity, competence, competency, adeptness, adroitness, excellence, mastery, prowess, professionalism, aptitude, deftness, dexterity, finesse, facility, effectiveness, accomplishment, aptness, expertness, talent; informalknow-how
"her proficiency was obvious to everyone who sailed with her"
The 17 Mech Corps is my favorite unit for pointing out the lack of proficiency in the RKKA on 22 June, 1941. It's on the low end of the scale but in general the rest of the army wasn't a whole lot better off except for a few units. A handful of units could be a 60 in proficiency but generally 50 or less.
From The Deadly Beginning, Volume I, Soviet Order of Battle, WWII by Charles C. Sharp.
"The 17 Mechanized Corps has the melancholy distinction of being the most poorly equipled unit of all the poorly equiped and half formed mechanized corps in the Red Army on 22 June, 1941."
The 27 Tank Division had a few armored cars, few trucks or artillery towing tractors (not that there was much to tow), no maintenance units, no AA guns and only 25 training tanks. It was nothing more than an infantry regiment and a weak one at that.
The 36 Tank division was even worse off. No artillery of any kind, no AA, no maintenance, few trucks, no tractors (nothing to tow so no loss). Unlike it's sister division, the 27, it was caught in the Minsk pocket because it had zero mobility.
The 209 Mech Division was in the same poor shape. It too was destroyed at Minsk.
The best eqipped Mechanized Corps, the 6 Mech Corps, was well equiped with T-34, KV-1, KV2, trucks, artillery, artillery tractors, personnel and support units. It only lasted a couple of weeks. The tanks were gone even before that.
One of the most common things reported concerning the RKKA was the general lack of training. Only a few units actually had large unit training, battalion or above. Only one Mech Corps had corps level training. Any experienced personel was either in a prison, shot dead or dispersed throughout the RKKA because of the massive expansion program. Many soldiers hadn't even used a rifle. Many tank drivers only had enough experience to drive to battle and get killed. A tank division commander in the south watched as his T-34s were driven one after the other into a quagmire like lemmings where they got permanently stuck. The Soviet lost more tanks to abandonment then through battle.
In the south, when the Germans attacked, the 8 Mech Corps was ordered to Sambor. Then to Stryy. Then to west of Lvov. Then backtracked to Busk. All the while leaving broken down tanks along the roads.
A report on the status of the frontier armies dated 5 June, 1941:
1)"training is intermittant and uncoordinated"
2)"gunnery instruction is running two or three months behind schedule"
3)"coordination between troops within units is bad"
4)"the mechanized (motorized rifle) regiments have no conception of their proper role"
5)"wireless operators are inadequately trained"
plus 17 more items in a litany of shortcomings.
Divisions were missing large numbers of NCOs and officers. Some over 50%. There was no one to train the conscripts or reservists.
If you can find anything proficient in the RKKA in general on 22 June, 1941 then you are living a vivid fantasy life. Stavka didn't expect them to be ready until summer 1942.