In 1944 he was appointed deputy director-general of the United Nations Relief and Rehabilitation Administration.

Marsh was welfare adviser to the United Nations Relief and Rehabilitation Administration from 1944-46.

It was established with funds from the Rehabilitation Administration, and it is recognized as the first center for independent living.

From 1943 to 1945, he was deputy director general of the United Nations Relief and Rehabilitation Administration.

In retirement he worked for the United Nations Relief and Rehabilitation Administration.

In 1945 he was assistant director for Germany of the United Nations Relief and Rehabilitation Administration.

There was need of immediate aid from the United Nations Relief and Rehabilitation Administration.

She also worked briefly for the United Nations Relief and Rehabilitation Administration.

From 1945 to 1947 he was director of finance for the United Nations Relief and Rehabilitation Administration.

After the war, he was chief of the United Nations Relief and Rehabilitation Administration from 1945 to 1947.