Yesss! After hours of tests I finally found how to make all soldiers male  - starting ones and those new ones whom you can hire too. "gender":"random" should be changed to "gender":"male" in Xenonauts 2\assets\assets\xenonauts\template\strategy\masters\actor\combatant\human\xenonauts\human "gender":"female" should be changed to "gender":"male" in Xenonauts 2\assets\assets\xenonauts\template\strategy\actor\combatant\human\xenonauts\characters\starting_pool\soldiers\soldier_starting