The Polish Army was the 4th largest in Europe in World War II.

They numbered over 75,000 men, and 1,500 women serving as
Auxiliary. The majority of soldiers consisted of Polish citizens
who were detained in Soviet prison camps. Of some 1.5  million
prisoners taken by the Red Army, Stalin released only about
100,000.
II Polish Corps -  Facts and Statistics
Armaments
 
Tanks
264
Anti-Air Guns
234
Anti-Tank Guns
288
Artillery
248
Armoured Cars
440
APC's
1,241
Cars, Bren Carriers & Trucks
12,064
  Poland
Germany
Infantry Divisions
39
39
Cavalry Divisions
10
1
Mountain Brigades
3
3
Armoured Brigades
2
6
Panzer Division