Who has served in multiple branches of the military?

I enlisted in the Navy (84-96). Then became a chaplain in the Army and inter-service transferred back to the Navy. While in the Navy, I did a tour with both the Marines and Coast Guard.

I Served 12 years in the Marine Corps 1984-1996, infantry Dragon Antitank and then Ammo Tech. Six years in the Tenn. Army National Guard 1996-2001, as a Stinger Gunner and Bradley Gunner. Then Active Duty Army from 2001-2012, as an Ammo NCO.

USMCR 1994-2000 Marine Scout/LAV Crewman
USAR 2002-2005 Military Police

Myself, Army Oct 79-Jan 84 And a short stint in the National Guard
Then off to the Marine Corps untlil I retired in Nov 2001

Found another "four brancher" :

http://www.stripes.com/news/20-years-4-branches-servicemember-is-part-of-exclusive-club-1.298471#.U_SZ9Dvdwl8.facebook

Have been there myself....served in four branches:

Matt Murphy SERVICE HISTORY

Served in four branches of the US Armed Forces & the New Jersey National Guard:
USAF SGT

Discharge 20JU70

RVN service
USAF 6924th SECURITY SQ
07JA67 - 07JA68 USNR CTI3

Discharge 19NO75

3-12th NAVAL SECUITY GROUP
USAR SSGT

Discharge 07JA78

11th Special Forces USMCR SGT

Discharge 22JN82

Co "G" 2nd BN 25th 4thMarDiv
NJ National Guard SGT

Discharge 18AU85

50th Armd Div
3/113th M INF

There was a captain in my platoon in Ranger school who had just transferred from the Air Force (can't remember his MOS) to the Army Infantry. Ranger school was his first Army assignment. It was a rough transition.

Marine Corps (1983-1989)
Army (1999 - PRES)

1988-1994 USAF Security Specialist (Active duty)

1996-2012 Army National Guard.

Army Infantry, Coast Guard Gunners Mate Cheif and LEO.

Marines: 86-93, Army: 93-14. Somehow, the Marines made the Army seem easy, especially when putting together my Class A's.

Air Force 1960 to 1975 E-1 through E-5 and O-1 to O-3.

Army Reserve 1978 to 1986 E-6 and E-7.

U.S. Navy (1964-68) & U.S. Coast Guard Reserve (1987-89)

Army National Guard, in the process of switching to Air Guard.

I started with the Navy in 1993, (USS Ohio SSBN 726) took a break and went to the Army (E BTRY 1/1 ADA and A BTRY 6/52 ADA). Now I am finishing my 20 years in the Air Force reserves (72d Aerial Port Squadron).

USN 1990-2000
USAFR 2004-Present

I definitely made the right choice the first time around but hindsight is 20/20!! :-)

Army active duty 1994-2000
Air Force Reserve 2006-2009
Navy active duty 2009-whenever they tell me it's time to go home.

Additionally, I haven't served in the Marine Corps, but I am assigned to a Marine Corps unit as a chaplain. If I can swing a Coast Guard tour before they send me home I will have served with all 5 branches.

1990-1992: USAF Medical Services Technician
1992-1998: USAF Fire Protection Specialist
2001-Pres: USN Hospital Corpsman

I have had great experiences and have seen the world with both. The majority of the people I have served with have been great. I am a firm believer that your own attitude makes a difference.

USMC 1983-1987 (Aviation Ordnance)
Army 1987-1991 (Infantry, Abn)

The Corps wouldn't let me change MOS to re-enlist until my IRR was over, which meant another 4 years, so I re-enlisted in the Army.

Marine Corps Active and Reserve 1979-1985
Air Force (National Guard) 1985-1996
Navy Reserve 1996-1997
Air Force (National Guard)1997-2004

That little stint in the Navy Seabees was only 6 months my Guard unit was deactivated and I had to find a home. When a new Guard unit was activated went back at my Commanders request. And was damn happy I did!

SGM Quick same here for me. I was in the Marine Corps from 1992 - 1996.
I had a one year break in service and joined the Army 1997.