Nudelman-Suranov 45 mm
... that during World War II, the Soviet Union equipped two air regiments with single-engine fighters armed with the Nudelman-Suranov 45 mm cannon?
... that during World War II, the Soviet Union equipped two air regiments with single-engine fighters armed with the <b id="mwCJI"><a href="./Nudelman-Suranov_NS-45" id="mwCJM" rel="mw:WikiLink" title="Nudelman-Suranov NS-45">Nudelman-Suranov 45 mm</a></b> cannon?