Formed in 1927, the company quickly became the largest defence contractor of inter-war Poland.

[1] The company was state-owned, governed by the 9-member Administrative Council and the Director, both directly subordinate to the Minister of Military Affairs.

[2] Among the factories belonging to the PWU were:[1] The company was also one of the major investors in the Central Industrial Area.

[1] The construction was hampered by the outbreak of World War II.

[1] The Polish government in exile "temporarily suspended" the Board of Directors of the PWU concern until the end of the war.