ether, I don't understand your question but let me shotgun some answers to see if I get it. If you mean the military organizations of other countries, I am most familiar with those of the UK, Germany, and Australia. I never saw any of my officer counterparts in a dress uniform but those who were carrying sidearms did use lanyards while in their duty uniforms. If your question was about officers carrying rifles or sidearms, I mostly associated with field grade officers (Major through Colonel) and these generally had sidearms.
My experience is that most lieutenants carry rifles, and captains on staff do also. After that, it depends on the position. As a lieutenant and later a captain on a General Staff, I carried an M16. As a company commander, I was issued a .45 and My lieutenants and warrant officers carried M16's. On the General Staff I served on, all lieutenants, captains, and warrant officers carried M16's while Majors and above were issued .45's.
If I didn't answer your question, e-mail me and we'll get to it.
Bruce Woodbury
[This message has been edited by support_six (edited October 25, 2000).]