Emir hemen uygulandı.

Here Emir means order, command, or decree.

A learner may wonder if it is the male name Emir, because the sentence starts with a capital letter. In Turkish, the first word of a sentence is always capitalized, so capitalization does not tell you whether it is a name here.

So in this sentence, Emir hemen uygulandı means something like:

• The order was carried out immediately.
• The command was implemented right away.

Context usually makes it clear that emir is the noun order/command.

Because uygulandı is a passive verb form.

It breaks down like this:

• uygula- = to apply, implement, carry out
• uygulan- = to be applied, to be implemented
• uygulandı = was applied / was implemented

So the sentence is literally:

• Emir = the order
• hemen = immediately
• uygulandı = was implemented

That is why English uses was: Turkish does not need a separate word for was here, because the verb ending already contains that information.

It is the simple past tense (also often called the definite past in Turkish grammar).

The ending -dı / -di / -du / -dü marks a completed action in the past. Here it appears as -dı:

• uygulandı = was carried out / was implemented

So the sentence describes a finished action in the past.

Because Turkish usually puts grammatical information directly into the verb.

In English:

• was carried out

In Turkish, that same idea is packed into one word:

• uygulandı

This one word includes:

• the verb meaning
• the passive meaning (be done)
• the past meaning

So Turkish often uses fewer separate words than English.

Because Emir is the subject of this passive sentence, so it stays in the basic form, often called the nominative.

Compare:

• Hükümet emri hemen uyguladı.
  = The government implemented the order immediately.
  Here emri is the object, so it takes the accusative ending.

• Emir hemen uygulandı.
  = The order was implemented immediately.
  Here emir becomes the subject of the passive sentence, so there is no accusative ending.

Hemen means immediately, right away, or at once.

In this sentence, it tells you that the action happened without delay:

• Emir hemen uygulandı.
• The order was carried out immediately.

It modifies the verb, not the noun. So it tells us when/how quickly the order was carried out.

Yes, but Turkish word order is somewhat flexible.

The most neutral order is:

• Emir hemen uygulandı.

This follows the common Turkish pattern of putting the verb at the end.

You may also see other orders for emphasis, for example:

• Hemen emir uygulandı.
• Emir uygulandı hemen.

These can sound marked, contextual, or less neutral depending on the situation. For a learner, Emir hemen uygulandı is a very natural standard order.

A useful breakdown is:

• uygula- = implement, apply
• -n- = passive marker here
• -dı = past tense

So:

• uygula-
• uygulan-
• uygulandı

In simpler learner terms:
uygulandı = was implemented / was applied

You do not need to memorize every sound change at first, but it is good to recognize that Turkish often builds meaning by adding endings to a verb stem.

It is understandable and grammatically correct, but depending on context, Turkish speakers might also say:

• Emir hemen yerine getirildi.

This is often especially natural for orders or commands, because yerine getirmek means to fulfill / carry out.

Meanwhile, uygulamak is also very common and can mean:

• to implement
• to apply
• to carry out

So Emir hemen uygulandı is fine, but Emir hemen yerine getirildi may sound more idiomatic in some contexts.

Yes. uygulamak is a broad verb and can mean:

• to apply a rule
• to implement a policy
• to carry out a plan
• to perform a method or procedure

Examples:

• Bu kural uygulandı. = This rule was applied.
• Yeni politika hemen uygulandı. = The new policy was implemented immediately.

So in your sentence, the meaning depends on what emir refers to. With emir, the idea is usually carry out/implement the order.

Yes. That is one of the main uses of the passive in Turkish.

• Emir hemen uygulandı. = The order was carried out immediately.

The sentence focuses on the order and the fact that it was carried out, not on who did it.

If you wanted to mention the doer, Turkish would usually switch to an active sentence, for example:

• Askerler emri hemen uyguladı. = The soldiers carried out the order immediately.

So the passive helps keep the agent unknown, unimportant, or unstated.