Wars usually end up with names that are geographically straightforward, but U.S. military operations -- our small or secret wars or entrenched deployments-without-end -- have names that sound so glorious, so noble, so hopeful. I like to imagine a room somewhere deep in the bowels of the Pentagon where a committee of brass, bureaucrats, and PR execs, all with top-level security clearances, huddles around a thesaurus for the fine-tuning: a soupçon of threat here, a dash of fortitude there.... I suspect, though, that it's the job of some poor, under-appreciated schlub to come up with the titles, since almost no one uses or has heard of them. Sometimes, we haven't even heard of the war. So in the spirit of auld lang syne, here is a list of many (by no means all) of the military operations the United States has been involved in over the past quarter century. 
1990
Operation Desert Shield
Persian Gulf
8/7/1990 -1/17/1991
1991
Operation Desert Storm
Persian Gulf
1/17 - 2/28/1991
Operation Provide Comfort
Northern Iraq
3/1991 - 12/31/1996
1992
Operation Southern Watch
Southern Iraq
8/26/1992 - 3/19/2003
1994
Operation Uphold Democracy
Haiti
9/19/1994-3/31/1995
Operation Vigilant Warrior
Persian Gulf
10/8 - 12/15/1994
1995
Operation Joint Endeavor
Bosnia & Herzegovina
12/20/1995 - 12/20/1996
1997
Operation Northern Watch
Northern Iraq
1/1/1997 - 3/17/2003
1998
Operation Desert Fox
Persian Gulf
12/16 - 12/19/1998
1999
Operation Allied Force
Serbia
3/24 - 6/10/1999
2000
Plan Colombia
Colombia
7/2000 - military involvement ongoing?
2001
Operation Enduring Freedom
Afghanistan
10/7/2001 - 12/28/2014
2002
Operation Enduring Freedom - Philippines
aka Freedom Eagle
Philippines
12/15/2002 - 6/2014
Operation Enduring Freedom - Horn of Africa
aka Operation Octave Shield
Sudan, Somalia, Djibouti, Ethiopia, Eritrea, Seychelles, Kenya
10/7/2002 - ongoing
2003
Operation Iraqi Freedom
Iraq
3/20/2003 - 8/31/2010
2004
Operation Secure Tomorrow
Haiti
2/29 - 6/1/2004
2005
Operation Enduring Freedom - Trans Sahara
aka Operation Juniper Shield
Sahara desert
4/2005 - ongoing
2008
Operation Enduring Freedom - Caribbean & Central America
Belize, Guatemala, El Salvador, Nicaragua, Costa Rica, Honduras, Panama
2008 - barely ongoing
2009
Operation Copper Dune
Yemen
12/14/2009 (?) - ongoing
2010
Operation New Dawn
Iraq
9/1/2010 - 12/15/2011
2011
Operation Neptune Spear
Osama bin Laden's compound, Pakistan
5/1 - 5/2/ 2011
2013
Operation Juniper Micron
Mali/Northwest Africa
1/2013 - 10/2013?
2014
Operation Atlantic Resolve
Eastern Europe
spring 2014 - ongoing
Operation Inherent Resolve
ISIL in Iraq & Syria
10/15/2014 - ongoing
Operation Resolute Support
Afghanistan
12/31/2014 - ongoing
And my nominee for 2015
Operation Enduring Peace
Everywhere
Because one can always hope, right? 
HAPPY NEW YEAR
UPDATE (1/6): The renamed U.S. mission in Afghanistan is Operation Freedom's Sentinel, while Resolute Support is the UN's overarching mission there. Despite some confusion over use of the possessive (Does the sentinel belong to freedom or are they equal partners?) the Pentagon expressed optimism that coordination of everything will go smoothly.