| Source | Internet |
| Event referred to | 1st September 1339 - Wehrmacht invasion of Poland |
| Technological characteristics | picture - .jpg format |
| Description of the source | The pictures shows German soldiers destroying the barriers at the Polish border on the first day of the invasion. |
| Contextualisation of the source | This pictures was published in German newspapers. |
| Interpretation of the source | A symbol for the beginning of the Second World War. |
| Original Contents | Picture only |
| Original Contents (English Translation) | Picture only |
