Прямого «одного» немецкого аналога у Semper fi (Semper fidelis) нет — в немецком нет устойчивого сленгового эквивалента с тем же культурным весом. Но есть близкие по смыслу варианты:

Основные соответствия

Immer treu — «всегда верен»
→ наиболее буквальный перевод по смыслу

Stets treu — «постоянно верен»
→ более книжный / формальный вариант

Историко-военный контекст

Meine Ehre heißt Treue — «Моя честь — это верность»
⚠️ использовалось Schutzstaffel (СС), поэтому сегодня токсично и неприемлемо в любом нормальном контексте

Современное употребление

В Bundeswehr нет популярного короткого слогана уровня «Semper fi». Немцы чаще скажут:

Treue (верность) — как абстрактное понятие

или обычные фразы вроде Ich halte dir die Treue («я остаюсь тебе верен»)

Итог

Если нужен нейтральный эквивалент: 👉 Immer treu — максимально близко по смыслу и без негативных ассоциаций.

#SemperFi #SemperFidelis #ImmerTreu #Верность #Loyalty #MilitaryEthos #Bundeswehr #USMC #Братство #Честь #Долг #ВоеннаяКультура #Tradition #Discipline #WarriorEthos

https://t.me/donoperinfo/59824

The USMC deserves a heavy version of their march. You're welcome! #usmc #usmarines #semperfi #semperfidelis
Proud doesn’t even begin to describe how I feel standing next to this young man. Watching him step into the uniform of a United States Marine fills my heart with honor, pride, and an overwhelming sense of gratitude. It’s not just a uniform it’s a symbol of commitment, sacrifice, and an unwavering dedication to something greater than oneself. This moment, right here, will stay with me forever. Semper Fi, son. 🇺🇸❤️🦅 #ProudMarineDad #USMC #SemperFi #FamilyOfTheBrave #HonorCourageCommitment
Being the Marine Corps Mascot - A Day in the Life of 'Chesty'

YouTube

Just over here waiting for the announcement from #PresidentCamacho that he will be celebrating the U.S. Marine Corps' 250th birthday on Monday with a parade or something...

#Marines #USMC #SemperFi #marinecorps250thanniversary #marinecorps250 #marinecorpsbirthday

Overcoming failure with dignity. #SemperFi
OTD in 2020, further reports emerged describing #GOP President Donald #Trump repeatedly referring to US war dead, especially #USMC killed at #BelleauWood, as "losers" and "suckers" https://toilet-guru.com/trump/?s=mb #embarrassment #SemperFi
Donald Trump's Gold Toilets

Donald Trump has a dictator's taste in decoration; much like Saddam Hussein and other dictators, he prefers gold-plated bathroom fixtures. All this and more on the Toilets of the World.

Toilets of the World
OTD in 2020, further reports emerged describing #GOP President Donald #Trump repeatedly referring to US war dead, especially #USMC killed at #BelleauWood, as "losers" and "suckers" https://toilet-guru.com/blog/63.html?s=mb #embarrassment #SemperFi
Trump's Toilet of Treason

Sensitive Government Documents are Piled in a Tacky Golf Resort Bathroom — A blog about toilets

Toilets of the World
I almost feel pity for those ICE "agents" if one or all three of those #Marines ever find out who they are! Almost... It looks like most of those roly poly pudgsters havent done a day of cardio since grade school and if they run? They're just gonna die tired. #FamiliaPrimum #SemperFi

RE: https://bsky.app/profile/did:plc:5o6k7jvowuyaquloafzn3cfw/post/3luo4lgwb5s2w