Making the bodies stick around is easy peasy. Right-click on your game in your steam library, and click browse local files. From there, follow this filepath: Starship Troopers - Terran Command\Starship Troopers_Data\StreamingAssets\Data. Once there, you should see a file called variables.txt. Open it up with notepad, or notepad++, and at the bottom should be two variables, unitSinkTime, and unitSinkSpeed. Change the value of both to be 0. Congratulations, you did it!