PFC(P) Private RallyPoint Member 4230454 <div class="images-v2-count-0"></div>How long is the AIT for combat engineer and how do I find out what MO NG units are engineer units? How long is 21B AIT for prior service? 2018-12-23T15:17:12-05:00 PFC(P) Private RallyPoint Member 4230454 <div class="images-v2-count-0"></div>How long is the AIT for combat engineer and how do I find out what MO NG units are engineer units? How long is 21B AIT for prior service? 2018-12-23T15:17:12-05:00 2018-12-23T15:17:12-05:00 SSG Private RallyPoint Member 4230789 <div class="images-v2-count-0"></div>It&#39;s classes at 12B now. This is an OSUT MOS it was 15 weeks, but I have heard they are making it 21 after the first of the year. Response by SSG Private RallyPoint Member made Dec 23 at 2018 5:54 PM 2018-12-23T17:54:16-05:00 2018-12-23T17:54:16-05:00 SPC Joe Frailey 4232748 <div class="images-v2-count-0"></div>How long have you been out? Response by SPC Joe Frailey made Dec 24 at 2018 4:17 PM 2018-12-24T16:17:49-05:00 2018-12-24T16:17:49-05:00 2018-12-23T15:17:12-05:00