All 12 Uses of

intervene
in
War and Peace

Princess Anna Mikhaylovna intervened in the conversation, evidently wishing to show her connections and knowledge of what went on in society.†
Chpt 1

intervened = got involved or came between

"The Berlin cabinet cannot express a feeling of alliance," began Hippolyte gazing round with importance at the others, "without expressing...as in its last note...you understand...Besides, unless His Majesty the Emperor derogates from the principle of our alliance... "Wait, I have not finished..." he said to Prince Andrew, seizing him by the arm, "I believe that intervention will be stronger than nonintervention.†
Chpt 2

intervention = get involved; or come between

Prince Bagration, apparently not wishing to be severe, found nothing to say; the others did not venture to intervene.†
Chpt 2

intervene = get involved or come between

Gervais intervened with a joke, and the talk reverted to its former lively tone.†
Chpt 6

intervened = got involved or came between

Princess Mary asked Mademoiselle Bourienne's pardon, and also her father's pardon for herself and for Philip the footman, who had begged for her intervention.†
Chpt 8

intervention = get involved; or come between

Nicholas' letter in which he mentioned Princess Mary had elicited, in her presence, joyous comments from the countess, who saw an intervention of Providence in this meeting of the princess and Nicholas.†
Chpt 11

At first her intervention in the business of packing was received skeptically.†
Chpt 11

Having abandoned the conception of the ancients as to the divine subjection of the will of a nation to some chosen man and the subjection of that man's will to the Deity, history cannot without contradictions take a single step till it has chosen one of two things: either a return to the former belief in the direct intervention of the Deity in human affairs or a definite explanation of the meaning of the force producing historical events and termed "power."†
Chpt 15

The historians, in accord with the old habit of acknowledging divine intervention in human affairs, want to see the cause of events in the expression of the will of someone endowed with power, but that supposition is not confirmed either by reason or by experience.†
Chpt 15

Without admitting divine intervention in the affairs of humanity we cannot regard "power" as the cause of events.†
Chpt 15 *

Despite all the terror of what had happened during those last days and during the first days of their journey, this feeling that Providence was intervening in her personal affairs cheered Sonya.†
Chpt 12 *

Definitions:

(1) (intervene as in: intervened in the war)
the process of getting involved to influence an outcome
The exact meaning of intervention can depend upon its context. For example:
- "intervention program for at-risk youth" -- a process of trying to influence the direction of someone's life
- "medical intervention" -- action taken to improve a medical outcome
- "military intervention" -- interference by a government in affairs of another government (in this case to interfere militarily)
- "had a family intervention" -- an organized meeting of family members to encourage someone (who is often surprised) to recognize and work at solving a problem such as substance abuse
(2) (intervene as in: in the intervening years)
something between two other things -- especially the passage of time between two events
(3) (meaning too rare to warrant focus)
meaning too rare to warrant focus:

Much more rarely, intervene can mean:
in various senses, including:
- to verbally interrupt -- as in "Not now!' she intervened."
- to be physically between -- as in: "You can't walk from one hill to the other because an impassable river intervenes."