Simplify the following text for a Grade 8 native English-speaking person.
Original: For the unfinished filming of the `` novel '' of Soldadera , without incurring any cost , Eisenstein had secured 500 soldiers , 10,000 guns , and 50 cannons from the Mexican Army , but this was lost due to Sinclair 's canceling of production .
Simplified: For the unfinished filming of the `` novel '' of Soldadera , Eisenstein had gotten 500 soldiers , 10,000 guns , and 50 cannons from the Mexican Army . This was lost due to Sinclair 's canceling of production .