Karl E. Hayes



21 Years Around The World 1948-1970


The United States Army in Vietnam.  By Adrian G. Traas​

I had this Topo Joe patch made in 2015 using several examples of Topo Joe patch designs from WWII through 1970.This patch is available only to those who served with Ethiopia-United States Mapping Mission and their family members. 

Karl E. Hayes has compiled information both historic and current concerning the de Haviland DHC-3 'Otter' (U.S. Military U-1)  which provides many interesting stories concerning most Otters ever built. I own a copy on CD-ROM and recommend it highly. All the U-1A Otters used by the 64th and 572nd in Libya, Iran, and Ethiopia are represented.

         CLICK HERE FOR PURCHASE INFORMATION ON  "DHC-3 Otter - A History"  by Karl E. Hayes

De Havilland Canada 

Ernie Svec (host of the 2017 Reunion in San Antonio, Texas) had these Topo Joe caps reproduced for the 2017 reunion and has asked me to advertise them here on the Web site.

If you're interested in purchasing a hat please contact me at webhost_eusmm@grandetx.com and I'll forward your contact information to Ernie.

 M/SGT Sims (Ret.) has also written a book of his adventures with the U.S. Army Corps of Engineers titled:


1948 - 1970




​​If you prefer to make your donation by check or money order please email me at:


This 3.5 inch diameter 'Mapping Mission' patch was designed using the original Mapping Mission crest as it's template. The patch is 100% embroidered with polyester and gold metallic threads and has an iron-on adhesive backing. 


Author photo and Back of Book

Floyd Sims made these beautiful plaques for the 2011 Reunion but at the last minute was unable to attend. He's selling them for $50.00 each which includes the packaging and shipping costs.

Floyd served in Ethiopia with Mapping Mission on two occasions, first from 1965 to 1966 and again from 1967 to 1968.

Stained Glass plaque of Ethiopia-U.S. Mapping Mission


Click the GPO S/N links below for purchase information. 

CMH Pub 91-14, Cloth  GPO S/N: 008-029-00527-1  (Hardcover)

CMH Pub 91-14-1, Paper   GPO S/N: 008-029-00526-3     (E-Book)                                                     

LTC Adrian G. Traas (Ret.) was TOPOCOM Executive Officer at Battalion HQ in Italy until he assumed command over the battalion on 3 May 1970, when LTC Stukhart left Italy.

On 29 April 1970, when Col. Talbert departed as CO of Ethi-U.S. Mapping Mission, LTC Trass took command and remained as the Mission head until it closed in late July or early August.   

'Engineers at War' describes the role of military engineers, especially the U.S. Army Corps of Engineers, in the Vietnam War. It is a story of the engineers' battle against an elusive and determined enemy in one of the harshest underdeveloped regions of the world. Despite these challenges, engineer soldiers successfully carried out their combat and construction missions. The building effort in South Vietnam allowed the United States to deploy and operate a modern 500,000-man force in a far-off region. Although the engineers faced huge construction tasks, they were always ready to support the combat troops. They built ports and depots, carved airfields and airstrips out of jungle and mountain plateaus, repaired roads and bridges, and constructed bases. Because of these efforts, ground combat troops with their supporting engineers were able to fight the enemy from well-established bases. Although most of the construction was temporary, more durable facilities, such as airfields, port and depot complexes, headquarters buildings, communications facilities, and an improved highway system, were intended to serve as economic assets for South Vietnam.

This volume covers how the engineers grew from a few advisory detachments to a force of more than 10 percent of the Army troops serving in South Vietnam. The 35th Engineer Group began arriving in large numbers in June 1965 to begin transforming Cam Ranh Bay into a major port, airfield, and depot complex. Within a few years, the Army engineers had expanded to a command, two brigades, six groups, twenty-eight construction and combat battalions, and many smaller units.