We are displaying the solving process step by step in case you need to clarify some unsolvable piece.
Solving Steps
1 [door-to-jamb connection] is replaced by 'hinge'
2 [something gone on by the unhinged] is replaced by 'rant'
3 [enemy of antiperspirant] is replaced by 'sweat'
4 [what you should not sweat when small] is replaced by 'stuff'
5 [it might be stuffy or bloody] is replaced by 'nose'
6 [👃 nose ➡️ ___ ⬅️ "Around the Rosie" 🎶] is replaced by 'ring'
7 [one of many on a custodian's ring] is replaced by 'key'
8 [open without a key, as a lock 🔓] is replaced by 'Pick'
9 [cured meat counter] is replaced by 'deli'
10 [indelible skin ink, for short] is replaced by 'tat'
11 [one might be d'état or de grâce] is replaced by 'coup'
12 [hunter who uses coupons] is replaced by 'bargain'
13 [release drafted by a PR agency] is replaced by 'press'
14 [denial, ___, bargaining, depression, acceptance] is replaced by 'anger'
15 [serve that clips the net 🎾] is replaced by 'let'
16 [very dangerous style of roulette 🇷🇺] is replaced by 'russian'
2 [something gone on by the unhinged] is replaced by 'rant'
3 [enemy of antiperspirant] is replaced by 'sweat'
4 [what you should not sweat when small] is replaced by 'stuff'
5 [it might be stuffy or bloody] is replaced by 'nose'
6 [👃 nose ➡️ ___ ⬅️ "Around the Rosie" 🎶] is replaced by 'ring'
7 [one of many on a custodian's ring] is replaced by 'key'
8 [open without a key, as a lock 🔓] is replaced by 'Pick'
9 [cured meat counter] is replaced by 'deli'
10 [indelible skin ink, for short] is replaced by 'tat'
11 [one might be d'état or de grâce] is replaced by 'coup'
12 [hunter who uses coupons] is replaced by 'bargain'
13 [release drafted by a PR agency] is replaced by 'press'
14 [denial, ___, bargaining, depression, acceptance] is replaced by 'anger'
15 [serve that clips the net 🎾] is replaced by 'let'
16 [very dangerous style of roulette 🇷🇺] is replaced by 'russian'
The Answer
the Pickelhaube is adopted by the Prussian infantry
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