5. **What are the ethical considerations and potential controversies involved in collecting militaria, especially items related to regimes or conflicts with contentious historical legacies?
4. **How have international laws and regulations, like those around deactivated weapons or national heritage protection, affected the trade and collection of militaria across different countries?
3. **What impact do historical events, such as battles or significant military campaigns, have on the value and collectibility of related militaria items?
2. **How can collectors verify the authenticity and provenance of military artifacts, particularly uniforms and medals, to avoid purchasing reproductions or forgeries?
**What are the primary differences between collectible militaria from World War I and World War II in terms of design, materials, and historical significance?