What is ยุคหลังสงคราม?

There’s no single date range—commonly it means the late 1940s through the 1950s after World War II, but 'post‑war' can refer to the years after any major conflict. Always specify the region and year in your story for accuracy, because social conditions changed quickly year to year.

Wartime plots often center on separation, danger, and immediacy; post‑war plots emphasize rebuilding, coping with loss or trauma, shifting social roles, and the choices people make when danger has passed but consequences remain.

No—military service is common but not required. The era affects civilians too: rationing, housing shortages, job competition, and changing gender expectations all create believable stakes and obstacles for romantic plots.

Yes. Avoid romanticizing trauma or using wartime suffering as mere plot ornament. Research social history, economic realities, and cultural specifics of the setting you choose, and portray psychological effects (grief, PTSD) respectfully or consult sensitivity readers if depicting trauma in detail.