Complex sentence: Disruption of parts supply and non-cooperation of Japanese advisors delayed its launch date from the originally planned 10 October 1933 to 28 September 1935, and blocked delivery of originally-specified anti-aircraft weapons, and equivalent replacements of those weapons had to be bought via Germany.
Split into simpler sentences: Disruption of parts supply and non-cooperation of Japanese advisors delayed its launch date from the originally planned 10 October 1933 to 28 September 1935. Blocked delivery of originally-specified anti-aircraft weapons meant that equivalent replacements of those weapons had to be bought via Germany.