In 1904, he was transferred again to the Bureau of Equipment. In this role, Kaiser was a pioneer in early wireless transmissions and conducted many of the early tests of wireless telegraphy. In 1905, he demonstrated an 1,100+ mile range while testing it aboard the USS Brooklyn. In July 1905, he was promoted to a full lieutenant commander and invited to speak on these innovations to the Washington Society of Engineers in Washington, DC. In 1910, he was transferred to the Bureau of Steam Engineering.
In 1912, he was given his first command, the cruiser USS Montgomery. The following year, he was given command of the USS Tennessee before being promoted to a full commander. He served in the Boston Naval Yard and Naval War College in Newport, Rhode Island in 1915, before returning to the command of the battleship USS New Jersey and receiving a promotion to captain.
Later career
In the 1920s, Kaiser was assigned to the hydrographic office in Galveston, Texas. In 1923, he was briefly the acting-commandant of the 8th Naval District before being assigned to the New York hydrographic office. He retired April 1, 1925.