15 cm sFH 18
...that the German 15 cm sFH 18 was the first field gun to use Rocket Assisted Projectiles?
...that the German <b id="mwFoU"><a href="./15_cm_sFH_18" id="mwFoY" rel="mw:WikiLink" title="15 cm sFH 18">15 cm sFH 18</a></b> was the first field gun to use <a class="mw-redirect" href="./Rocket_Assisted_Projectile" id="mwFoc" rel="mw:WikiLink" title="Rocket Assisted Projectile">Rocket Assisted Projectiles</a>?