Revised with dates of each module's events. When specific months weren't available, I've attempted to infer approximate dates from mentions of seasons or other evidence; these are denoted with tildes (~). Yes, GDW's dates do result in a few temporal improbabilities.
Also updated the relationships of the first few Poland modules per Raellus' suggestions, and fixed the Return to Europe relationships after taking a closer look at those modules' chronologies.
(Yeah,
Escape from Kalisz should be July, not June, and the rest of the approximate dates in the original Poland modules should be pushed back a month. I just caught that. Durrr.)
- C.