The U.S. Army does not have a specific regulation that solely covers fraternization. However, the concept of fraternization is addressed in various Army policies, such as Army Regulation 600-20, Army Command Policy, which prohibits or restricts personal relationships that could affect the unit's morale, discipline, or mission accomplishment. Additionally, each branch of the Army may have its own specific policies on fraternization.
Army Regulation 601-210 covers Active and Reserve Components Enlistment Army Regulation 601-280 covers Army Rentention Program
Ar 600-55
Ar 600-9
Policy memorandum. #10-052
What regulation cover Army Safety Program?
Army Regulation 530-1 and Army Regulation 25-1
FM 7-21.13, Appendix C, Section II.
Army Regulation 690-950
I don't thing that the Hungarian army has a regulation 2550.
Army Regulation 600-82
Army Regulation 600-85
It depends which army you mean