I just borrowed the book "HERAKLES & THE SWASTIKA - Greek Volunteers in the German Army, Police & SS 1943-1945" by Antonio J. Munoz, through the Inter-library loan program. I believe it was published in 1998 by Axis Europa Books.
It claims to be the "History of the little known Greek collaborationist forces. The author travelled extensively gathering new data & unpublished photos." It's actually quite short, only 68 pages, including 36 photographs and 35 detailed battle maps.
It includes 23 Greek names (listed below) along with the Table of Contents. I was disappointed in the book, it has some interesting photographs, but I hoped that it would provide more details regarding the Greek Volunteers.
Good luck with your Greek family history research.
Georgia Keilman nee Stryker (Stratigakos)
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GREEK NAMES MENTIONED IN BOOK
Fosteridis, Andronios - photograph included
Poulos, George - photographs included
Vafiadis, Markos - photograph included
TABLE OF CONTENTS
Italy's Surrender and Its Consequences
The Birth of the Greek Security Battalions
The Fight Against the Greek Guerrillas
IMRO and Volunteer Battalion "Kastoria"
EASAD and the Village Militia Companies of Thessaly
Colonel George Poulos and the Poulos-Verband of Macedonia
Formation of the Higher-SS & Police Command "GREECE"
Toward A Reckoning: The Numbers
TABLES, CHARTS & MAPS
Communist & Republican Guerrilla Concentrations, Fall - 1942
Spring - 1943
Fall - 1943
Spring - 1944
August - 1944
How Greece Was Partitioned by the Axis Forces
Diagram: Typical Evzone Battalion, 1943-1944
Security Battalions in the Spring of 1944 in the Peloponnes Region
Operation "Viper" - June 10th, 1944
Advance of the Eastern Battlegroup During Operation "Otter Crossing," 5-25 August, 1944
Volunteer Battalion "Kastoria" and ELAS Divisions in Northern Greece
Police Volunteer Battalion "Karditsa"
Area of Operations of the Poulos Volunteer Battalion
Diagram: Organization of the Poulos-Verband - February
Greek Volunteer Police Formations in Greece (Not including the Peloponnes)
Various Tables Listing Troop Strengths, and Losses