Major Kasmer commissioned into the Marine Corps in May 2009. After completion of Basic Officer Course and Infantry Officer Course, he reported to 3d Battalion, 8th Marines in July 2010, where he took command of 2d Platoon, India Company. In August 2010, India Company deployed aboard the USS Kearsarge as helo-company of the 26th MEU, and he led his platoon during training aboard ship and ashore in Djibouti, Jordan, and Kuwait until December of that year. In January 2011, BLT 3/8 was sent ashore to support ongoing combat operations in Helmand Province, Afghanistan. Once ashore, he established and commanded an independent coalition position in Nar-e-Saraj District until the BLT was relieved in May 2011.

Upon return to CONUS, he served briefly as the Weapons Platoon commander before being assigned as India Company’s executive officer. In this role, he coordinated the company’s OEF workup and subsequent deployment back to Helmand Province in May 2012. While deployed, he oversaw the force reduction of Marjah District from an entire battalion to a single rifle company, and coordinated the closure or turnover of multiple positions while supporting continuing combat operations of Afghan forces. After returning from deployment in November 2012, he transitioned to the role of assistant operations officer, where he supported 3/8’s workup and deployment in support of the SPMAGTF-Crisis Response until spring of 2014.

In April 2014 he reported to The Basic School in Quantico, where he initially served as the urban operations primary instructor before becoming a staff platoon commander for 5th Platoon, Alpha Co 1-15. He reported to Infantry Officer Course in May 2015, where he served until 2017 as an instructor, class advisor, and deputy director. Major Kasmer transitioned to the IRR in June 2017, and to the SMCR in November 2021 to take command of Weapons Company, 1st Battalion, 25th Marines.

For his civilian job, Major Kasmer works as an ocean systems engineer for the Johns Hopkins University Applied Physics Lab in Laurel, MD, where he supports a variety of undersea technology development efforts for the Department of Defense. He has previously worked in management roles at Fluke Electronics in Seattle, WA. He holds a Bachelor of Science in Ocean Engineering from the US Naval Academy and a Master of Business Administration from Harvard Business School.