<p>German Heavy 15 cm Feldhaubize 18, in production from 1935 to 1945, displayed in Hämeenlinna Artillery Museum. This howitzer was one of the mainstays of German artillery during World War II.
Photo taken on June 18, <a href="//commons.wikimedia.org/wiki/2006" title="2006">2006</a>.
</p>
Source: Photo by me, <a href="//commons.wikimedia.org/w/index.php?title=User:Balcer&amp;action=edit&amp;redlink=1" class="new" title="User:Balcer (page does not exist)">User:Balcer</a>.
<a href="//commons.wikimedia.org/wiki/User:Balcer~commonswiki" title="User:Balcer~commonswiki">Balcer~commonswiki</a>
CC BY 2.5
<span class="int-own-work" lang="en">Own work</span>