The President of the Pentagon local of the American Federation of Government Employees says he is opposed to his union organizing the military. AFGE delegates will decide this year whether to drop their civilian-only membership and work to sign up uniformed personnel of the Army, Navy, Air Force and Marines.

Eddie M. Bryant Sr., president of AFGE's big Local 2 here, says he thinks the union should concentrate its time, talent and service efforts on the civilian side of government. If AFGE wants more members, Bryant said in a message to members, it should concentrate on the more than 50 per cent of the federal labor work force that doesn't belong to a union.

AFGE people who want to organize the military argue that it would greatly increase the Union's clout in Congress, and benefit both civilian employees and military people who have many common interests. They think the military is ripe for a sign-up campaign, and AFGE recruiters - already well established at Army, Navy and Air Force installations - are ready to go when and if the members give them the green light. A decision probably won't come until fall.

Joyce R. Morrison has taken over as assistant director for public affairs at Federal Power Commission. This makes her one of the highest ranking women in the government information business.

Re-election Plans? Despite some earlier talk about possible retirement, Rep. Robert N.C. Nix (D-Pa.) apparently plans to run again in 1978 from his Philadelphia district.Nix heads the Post Office-Civil Service COmmittee which has jurisdiction over most federal and postal matters.

Friends of Nix held a successful $100 a plate dinner for him earlier this week at the Democratic Club. The big crowed was demoninated by leaders of federal and postal employee unions, and representatives of big direct mail outfits here.