Researching Grandpa's Korean war history

While I am also pursuing my Great grandfather's (mom's side) WW2 history I have some what diverged into other family as well and what they did with their service in other wars besides WW2. One of these is my Grandpa (dad's side) who served with an Engineer unit at the end of the war and was to my knowledge en route to Korea when the end of the war was declared. So I know somewhat of the basics but any other help would be appreciated in such as identifying unit crests in the pics below as well as any other info I may have missed. I apologize for the quality of the pics as they were taken with my cellphone will repost better pics when able. To the best of my knowledge the 3rd pic is the 45th Infantry Division patch and the 4th is the 8th Army. Any help with the first 2 would be appreciated as well as the translation of what the latin says under the 2nd pin.
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The 3rd is not the 45th "infantry" but the 45th Division : http://en.wikipedia.org/wiki/45th_Infantry_Division_(United_States)
The 4th pic is actually the 8th Army : Eighth United States Army - Wikipedia, the free encyclopedia

IF you look through the list of subordinate units for each of these larger units ( 8th Army & 45th Division) chances are you'll find what unit those Distinctive Unit Insignia's (DUI's) represent.

 

Thanks Jughead, I should have specified I knew that the 3rd pic belonged to the Infantry Division, I will edit to adjust on that thanks for the clarification.

 

Thanks for all of your help, and the search continues...

 

I located the DUI on the far left. It is for the 120th Engineer Battalion, 45th Division.

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I'm still working on the other one with the lizard or salamander critter on it.

 

It looks like the lettering beneath the 2nd DUI says "OCCM LIMUS". Any one have any knowledge on this?

 

Managed to find this possibility as the one for the salamander....or so far I should say the only one I've found.....

84th Information - The 84th Engineer Battalion Construction
TIOH - Heraldry - 84 Engineer Battalion
the above Vietnam era patch is a close match to the pin....the other examples don't match....thinking maybe it's just changed over the years as stated in the heraldry link and cannot find an exact match for the DI....

 

Biak & Clint each get credit for solving this one. Biak had the website and Clint had the unit. Here's the relevant link:

http://www.saundersinsignia.com/c/84th

 

For those who don't know, the DUI in question belonged to my father. So, I do know that the DUI above are Korean War vintage. I think Lou is correct that it is the earlier design. It would also not surprise me if they changed their motto, since nobody can seem to translate it. I did come across this page on Scribd.com which says "OCCH LIMUS" means "We Conceal". It claims the info is from TIOH, but I could not confirm that. However, it does make some sense since "occ" is the root for "occult". The word occult derives from the Latin occultus which means "to hide from view".

 

Thanks Guys! this stuff is fun/addictive when you get into hunting this stuff down....cool thing I learned in this was back in WWII it was the 84th Engineer Camouflage Battalion....fits the motto "We Conceal" perfectly!
40th Engineer Battalion (Camouflage) Saunders Military Insignia / Military insignia, patches, ribbons, medals, crests and more! Over 11,000 Items!
this was the only other salamander patch though not related.........

 

Wow step away for a day and a lot happens, thanks all for the assist. Especially to Clint, Biak, and TD-Tommy (Dad) for the info got myself stuck on this so at least now I have something more to work with as to my grandfather's service in Korea.