Willi joined Morphy Auctions in 2016, has formerly served as an active duty USAF officer for 13 years, and is a combat veteran of the Persian Gulf War. He has been an advanced collector of militaria and firearms for more than 45 years, as well as a consultant to top dealers and collectors. In addition to having contributed to more than 25 books, Willi also moderates numerous sections of the world’s largest militaria collecting website for more than 19 years. He has also been a serious competitive shooter, in various disciplines, for more than 40 years, having competed all over Europe and the US. Willi is a Life Member of the NRA and the Forks of the Delaware Historical Arms Society, as well as a Member of the Ohio Valley Military Society, German Gun Collectors Association, and the Ohio Gun Collectors Association.