Col. Tom Brewer, one of Nebraska's combat-hardened military men, has set his sights on a political career.
Brewer is expected to announce next week that he will mount a primary challenge against U.S. Rep. Adrian Smith, according to a person close to Brewer's fledgling campaign.
Brewer and Smith are Republicans.
A member of the Oglala Sioux tribe, Brewer grew up on the Pine Ridge Indian Reservation in South Dakota.
A former state senator, Smith lives in Gering. He has represented western Nebraska's 3rd Congressional District since 2007.
The primary is set for May 13.
Brewer, 54, has lived in Murdock, which is part of the 1st District, for more than a decade. He is in the process of moving to Gordon in the 3rd District. He has owned a home in Gordon for many years.
Brewer, who could not be reached for comment Thursday, has made it clear in recent interviews with Nebraska news media that he was interested in a political career. He recently retired from the Army Reserve after nearly 36 years.
During his years in uniform, Brewer has been deployed six times, serving in Iraq and at least two tours of duty in Afghanistan.
He has been wounded several times. In 2003, while on a mission near Kabul, he and a group of other soldiers were ambushed and Brewer was shot six times.
In 2011, on another tour in Afghanistan, Brewer was wounded by shrapnel from a rocket-propelled grenade.
He has earned the Purple Heart and a Bronze Star.
This would be Brewer's first foray into politics, and he would be running against a battle-tested politician.
Smith, 43, has spent his entire adult life in Republican political circles, and he hasn't faced a serious challenger in the past three elections.
Smith was re-elected in 2012 with 74 percent of the vote. He was re-elected with 70 percent of the vote in 2010.