Sole oriente, dux femina e castris procedit et legioni signum dat.

It is an ablative absolute.

That means Latin uses:

• a noun or pronoun in the ablative
• plus a participle in the ablative

to give the circumstances of the main action.

So sole oriente literally means with the sun rising, but in smoother English it usually becomes something like:

• when the sun was rising
• as the sun rose
• at sunrise

It sets the scene for the rest of the sentence.

Because they belong to the ablative absolute construction.

In an ablative absolute, both parts must be in the ablative:

• sole = ablative singular of sol
• oriente = ablative singular participle agreeing with sole

The idea is that this little phrase is grammatically separate from the main clause, even though it tells us the time or circumstance of the action.

Oriente is the present participle, ablative singular, of orior, oriri, ortus sum, meaning to rise.

A few important points:

• orior is a deponent verb, so it has passive-looking forms but an active meaning.
• The present participle means rising.
• It agrees with sole in case, number, and gender.

So sole oriente is literally the sun rising in the ablative absolute construction.

Because dux itself can refer to either a male or a female leader. It does not need a different ending to become feminine.

Latin often shows natural gender by context or by adding another noun. Here:

• dux = leader / commander
• femina = woman

So dux femina means something like:

• the leader, a woman
• the female leader
• a woman commander

Here femina is in apposition to dux: both are nominative singular and refer to the same person.

Latin often uses a noun in apposition where English might prefer an adjective.

So instead of a separate adjective meaning female, Latin can simply say:

• dux femina = leader, woman

This is a perfectly natural Latin way to specify who the leader is. It adds clarity, especially because dux by itself does not tell you whether the person is male or female.

Because castra is a special noun.

Castra, castrorum is a plural-only noun that means military camp. Even though English says camp in the singular, Latin normally uses the plural form:

• nominative/accusative: castra
• ablative plural: castris

Since e/ex takes the ablative, we get:

• e castris = out of the camp

So the plural form is normal here and does not mean there are several camps.

Both e and ex mean out of / from.

A common tendency is:

• e before a consonant
• ex before a vowel or h

Since castris begins with a consonant, e castris is very natural. But in many texts, the choice between e and ex is not absolutely rigid.

Because it is the indirect object of dat.

With do, dare (to give), Latin regularly uses:

• accusative for the thing given
• dative for the person or group receiving it

So:

• signum = the thing being given
• legioni = the receiver

Thus:

• legioni signum dat = she gives the signal to the legion

Signum is accusative singular.

It is the direct object of dat:

• dat = gives
• signum = the signal

So the pattern is:

• legioni = indirect object, to the legion
• signum = direct object, the signal

Literally, yes: she gives the signal.

But in military Latin, signum dare is a very common expression. It can mean:

• to give the signal
• to give the order to begin
• to signal action or movement

So it is both literal and idiomatic. In context, it often means that the commander signals the troops to act.

Procedit literally means goes forward, comes forth, or advances.

With e castris, it naturally means something like:

• comes out of the camp
• marches out from the camp
• advances from the camp

So the exact English wording can vary, but the idea is that the leader moves out from the camp.

The subject is dux femina.

You can tell because:

• dux is nominative singular
• femina is nominative singular in apposition
• the verbs procedit and dat are both third person singular

So the sentence is about one person: the female commander.

Legioni is not the subject, because it is dative, and signum is not the subject, because it is accusative.

Because Latin has no articles.

There is no direct equivalent of English the or a/an. So a noun like dux can mean:

• the leader
• a leader

and signum can mean:

• the signal
• a signal

The correct English choice depends on context.

Yes, but not in the same strict way as in English.

Latin word order is flexible because endings show the grammatical roles. This allows the writer to arrange words for:

• emphasis
• style
• clarity

In this sentence:

• Sole oriente comes first to set the scene.
• dux femina introduces the subject.
• e castris procedit gives the first action.
• et legioni signum dat adds the next action.

A different word order could still be grammatical, but it might sound different in emphasis.