How to insert all data from one table into another, in Oracle?

Situation:

There is the following table called P_FAMILIA:

|ID |    NAME    | SOLDADOS   |
|---|------------|------------|
| 1 | Stark      |  30000     |
| 2 | Targaryen  |            |
| 3 | Lannister  |  15000     |
| 4 | Greyjoy    |            |

It is required to build a sql query, to pass all the fields of the previous table (the data supplied is an example, it can have many more records) to another table called P_DIAFAMILIAadding the number 1, that is, after executing the query get

|ID |IDP_FAMILIA|    NAME    | SOLDADOS   |
|---|-----------|------------|------------|
| 1 |    1      | Stark      |  30000     |
| 1 |    2      | Targaryen  |            |
| 1 |    3      | Lannister  |  15000     |
| 1 |    4      | Greyjoy    |            |

Scheme

CREATE TABLE P_FAMILIA
(
ID INT,
NAME VARCHAR2(30 BYTE),
SOLDADOS FLOAT(126)
);

ALTER TABLE P_FAMILIA
ADD PRIMARY KEY (ID);

CREATE TABLE P_DIAFAMILIA
(
   ID            INT NOT NULL,
   IDP_FAMILIA   INT NOT NULL,
   NAME          VARCHAR2 (30 BYTE),
   SOLDADOS      FLOAT (126)
);


ALTER TABLE P_DIAFAMILIA
ADD( FOREIGN KEY (ID)
REFERENCES P_FAMILIA (ID));

-- Insert Statements
Insert into P_FAMILIA
   (ID, NAME, SOLDADOS)
 Values
   (1, 'Stark', 30000);
Insert into P_FAMILIA
   (ID, NAME)
 Values
   (2, 'Targaryen');
Insert into P_FAMILIA
   (ID, NAME, SOLDADOS)
 Values
   (3, 'Lannister', 15000);
Insert into P_FAMILIA
   (ID, NAME)
 Values
   (4, 'Greyjoy');
COMMIT;