Complex sentence: A footnote then defined "armoured troops" as "anti-tank troops and heavy assault guns" resulting in the fact that 90% of assault gun production would be outside of Guderian's control and left to the Artillery Generals.
Split into simpler sentences: A footnote then defined "armoured troops" as "anti-tank troops and heavy assault guns". This meant that 90% of assault gun production would be outside of Guderian's control and left to the artillery generals.