This 60-cm gauge <a href="https://en.wikipedia.org/wiki/locomotive" class="extiw" title="en:locomotive">steam locomotive</a> is one of 495 manufactured by <a href="https://en.wikipedia.org/wiki/Baldwin_Locomotive_Works" class="extiw" title="en:Baldwin Locomotive Works">Baldwin Locomotive Works</a> for the <a href="https://en.wikipedia.org/wiki/War_Department_Light_Railways" class="extiw" title="en:War Department Light Railways">War Department Light Railways</a> supplying the front-line trenches of <a href="https://en.wikipedia.org/wiki/World_War_I" class="extiw" title="en:World War I">World War I</a>.  It has been preserved on the <a href="https://en.wikipedia.org/wiki/Leighton_Buzzard_Light_Railway" class="extiw" title="en:Leighton Buzzard Light Railway">Leighton Buzzard Light Railway</a>.
<a href="//commons.wikimedia.org/wiki/User:Agnellous" title="User:Agnellous">Agnellous</a>
CC BY 3.0
<span class="int-own-work" lang="en">Own work</span>