| Answer | Crossword Clue |
|---|---|
| ENL | Joined the Navy: Abbr. |
| ENLISTED | Joined the Navy |
| ENTD | Joined the Union: Abbr. |
| WWI | The U.S. joined it in 1917: Abbr. |
| SYR | Country once joined with Egypt as the United Arab Republic: Abbr. |
| NATO | Albania and Croatia are the last to have joined it (abbr.) |
