There was a personal connection when Kiss played a rare acoustic and no-makeup concert on Monday in support of a military museum in Oregon. And it went beyond wanting to honor those who've served. The facility is to be named after World War II veteran James B. Thayer, father of Kiss guitarist Tommy Thayer.

Kiss' concert, held in Lake Oswego, helped raise more than $1 million, according to The Oregonian. Among the items auctioned off was a guitar that Paul Stanley had used since 1989, which fetched $20,000. Tickets were $2,500 per person.

Thayer tweeted a photo from the event late last night.

Kiss have been working with Oregon's Historical Outreach Foundation for three years, all in the hopes of building the $15 million project, but this is the band's first concert performance. Monday's set list included 'Calling Dr. Love,' 'Shout It Out Loud,' 'Christine Sixteen' and 'Rock and All All Nite,' among other favorites.

The elder Thayer, a 93-year-old former brigadier general, liberated a Nazi concentration camp during the war. Gene Simmons said earlier this week that he stands as an example of the sacrifice made by so many back then. “Millions of people lost their lives so that we can have our freedoms,” Simmons told KOIN. “The least we could do is honor those who served, and so the museum is going to be a great monument to extraordinary people.”