Montana Lt. Gov. John Walsh (D) released his military records, pushing back on attacks from the Senate candidate's opponents on his service.

Walsh is the front-runner and establishment favorite for the nomination to replace retiring Sen. Max BaucusMax Sieben BaucusOvernight Defense: McCain honored in Capitol ceremony | Mattis extends border deployment | Trump to embark on four-country trip after midterms Congress gives McCain the highest honor Judge boots Green Party from Montana ballot in boost to Tester MORE (D-Mont.).

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He has faced accusations that he improperly used his position as an adjutant general in the Montana National Guard to support a veterans' group that advocates for better equipment for armed services members, accusations that included reports of a 2010 Army investigation that reprimanded him for pressuring lower-ranked soldiers to support the group.

"I've been with my soldiers when they've been fired upon and when they've been taken off the field on stretchers," Walsh said Sunday at a news conference at his campaign headquarters in downtown Helena, according to the Missoulian.

"It's because of them, and all American heroes, that I will never stop fighting to ensure that they receive the best equipment and training available."

Walsh is facing an uphill race against Rep. Steve DainesSteven (Steve) David DainesCongress passes bill to require Senate campaign filings to be made electronically Congress just failed our nation’s veterans when it comes to medical marijuana Sanders: Public should be ‘very concerned’ about election security in 2018 MORE (R-Mont.) and has a primary opponent as well, so negative stories about his military service — the strongest part of his campaign biography — could erode his chances of keeping the seat in Democratic hands.