The <a href="https://en.wikipedia.org/wiki/Beechcraft_Model_18" class="extiw" title="en:Beechcraft Model 18">Beechcraft Model 18</a>, or <i>Twin Beech</i>, is a 6–11 seat, twin-engine, low-wing, conventional-gear aircraft. It saw military service during and after World War II in a number of versions including the United States Army Air Forces (USAAF) C-45 Expeditor. This model is a UC-45J (N9659), 10-seater, it was built in 1944 (c/n 90536) and  has the livery of the US Marines.
<a href="//commons.wikimedia.org/wiki/User:Ad_Meskens" title="User:Ad Meskens">Ad Meskens</a>
CC BY-SA 3.0
<span class="int-own-work" lang="en">Own work</span>