When Gygax and Kaye founded Tactical Studies Rules (later TSR, Inc.) in 1973 to publish Dungeons & Dragons, they echoed part of the name of the LGTSA in the name of their new company; Blume later soon joined the partnership. The LGTSA continued to exist as a wargaming group well after the publication of Dungeons & Dragons.
In 1973, when Gygax and Kaye created Tactical Studies Rules (later TSR, Inc.) to publish Dungeons & Dragons, they included part of the name from the LGTSA in their company's title; Blume soon became a partner. The LGTSA remained active as a wargaming group after the release of Dungeons & Dragons.